package com.sky.service.impl;

import com.sky.dto.GoodsSalesDTO;
import com.sky.entity.Orders;
import com.sky.mapper.OrderMapper;
import com.sky.mapper.UserMapper;
import com.sky.service.ReportService;
import com.sky.service.WorkspaceService;
import com.sky.vo.*;
import io.netty.util.internal.StringUtil;
import io.swagger.models.auth.In;
import lombok.extern.slf4j.Slf4j;
import net.bytebuddy.asm.Advice;
import org.apache.commons.lang.StringUtils;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import javax.xml.crypto.Data;
import java.io.IOException;
import java.io.InputStream;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

/**
 * ClassName: ReportServicelmpl
 * Package: com.sky.service.impl
 * Description:
 *
 * @Author jian Cao
 * @Create 2025/4/11 15:09
 * @Version 1.0
 */
@Service
@Slf4j
public class ReportServicelmpl implements ReportService {
    @Autowired
    private OrderMapper orderMapper;

    @Autowired
    private UserMapper userMapper;

    @Autowired
    private WorkspaceService workspaceService;
    //统计指定时间的营业而
    @Override
    public TurnoverReportVO getTurnoverStatistics(LocalDate begin, LocalDate end) {
       //当前集合用于存放从begin到end范围内的每天的日期
        List<LocalDate> dateList =new ArrayList<>();
        dateList.add(begin);

        while (!begin.equals(end)){
            //日期计算，计算指定日期的后一天对应的日期
            begin =begin.plusDays(1);
            dateList.add(begin);
        }
        List<Double> turnoverList =new ArrayList<>();
        for(LocalDate date : dateList)
        { //查询date日期对应的营业额数据，营业额是指：状态为“已完成”的订单金额合计
          LocalDateTime beginTime=  LocalDateTime.of(date, LocalTime.MIN);
          LocalDateTime endTime=  LocalDateTime.of(date,LocalTime.MAX);
          Map map =new HashMap();
          map.put("begin",beginTime);
          map.put("end",endTime);
          map.put("status", Orders.COMPLETED);
          Double turnover= orderMapper.sumByMap(map);
          turnover = null == null? 0.0 :turnover;
          turnoverList.add(turnover);
        }


        return TurnoverReportVO.builder().
                dateList(StringUtils.join(dateList,",")).
                turnoverList(StringUtils.join(turnoverList,",")).
                build();


    }
    //统计指定时间区间内的用户数据
    @Override
    public UserReportVO getUserStatistics(LocalDate begin, LocalDate end) {
        List<LocalDate> dateList =new ArrayList<>();
        dateList.add(begin);
        while (!begin.equals(end))
        {
            begin =begin.plusDays(1);
            dateList.add(begin);
        }

        //存放每天的新增用户 select count(id) from user where create_time <? and create_time> ?
        List<Integer> newUserList =new ArrayList<>();
        //粗放每天的总用户数量 select count(id) from user where create_time<?
        List<Integer> totalUserList =new ArrayList<>();
        for (LocalDate date:dateList){
            LocalDateTime beginTime = LocalDateTime.of(date,LocalTime.MIN);
            LocalDateTime endTime =LocalDateTime.of(date,LocalTime.MAX);
            Map map =new HashMap();
            map.put("end",endTime);
            //总用户数量
            Integer totalUser =userMapper.countByMap(map);

            map.put("begin",beginTime);
            //新增用户数量
            Integer newUser =userMapper.countByMap(map);
            totalUserList.add(totalUser);
            newUserList.add(newUser);
        }


        return UserReportVO
                .builder()
                .dateList(StringUtils.join(dateList,","))
                .totalUserList(StringUtils.join(totalUserList ,","))
                .newUserList(StringUtils.join(newUserList,"，"))
                .build() ;
    }
    /*
     统计指定时间区间内的订单数据
     */
    public OrderReportVO getOrderStatistics(LocalDate begin,LocalDate end){
        List<LocalDate> dateList =new ArrayList<>();
        dateList.add(begin);
        while (!begin.equals(end))
        {
            begin =begin.plusDays(1);
            dateList.add(begin);
        }
        //存放每天的订单总数
        List<Integer> orderCountList =new ArrayList<>();

        //存放每天的有效订单数
        List<Integer> validOrderCountList =new ArrayList<>();
        //遍历datelist集合，查询每天的有效订单数和订单总数
        for(LocalDate date: dateList){
            //查询每天的订单总数
         LocalDateTime beginTime= LocalDateTime.of(date,LocalTime.MIN);
         LocalDateTime endTime =LocalDateTime.of(date,LocalTime.MAX);
         Integer orderCount= getOrderCount(beginTime,endTime,null);
         //查询每天的有效订单数

         Integer validOrderCount =getOrderCount(beginTime,endTime,Orders.COMPLETED);

         orderCountList.add(orderCount);

         validOrderCountList.add(validOrderCount);

        }
        //计算时间区间内的订单总数量
        Integer totalOrderCount =orderCountList.stream().reduce(Integer::sum).get();
        //计算时间区间内的有效订单数量
        Integer validOrderCount =validOrderCountList.stream().reduce(Integer::sum).get();

        Double orderCompletionRate =0.0;
        if(totalOrderCount !=0) {
            //计算订单完成lv
         orderCompletionRate = validOrderCount.doubleValue() / totalOrderCount;
        }



        return OrderReportVO.builder()
                .dateList(StringUtils.join(dateList,","))
                .orderCountList(StringUtils.join(orderCountList,","))
                .validOrderCountList(StringUtils.join(validOrderCountList,","))
                .totalOrderCount(totalOrderCount)
                .validOrderCount(validOrderCount)
                .orderCompletionRate(orderCompletionRate)
                .build();

    }
    //根据条件统计订单数量
    private  Integer getOrderCount(LocalDateTime begin,LocalDateTime end,Integer status){
     Map map =new HashMap();
     map.put("begin",begin);
     map.put("end",end);
     map.put("status",status);

    return  orderMapper.countByMap(map);

    }

    //指定时间区间内的销量排名前10
    @Override
    public SalesTop10ReportVO getSalesTop10(LocalDate begin, LocalDate end) {
        LocalDateTime beginTime = LocalDateTime.of(begin, LocalTime.MIN);
        LocalDateTime endTime = LocalDateTime.of(end, LocalTime.MAX);

        List<GoodsSalesDTO> salesTop10 = orderMapper.getSalesTop10(beginTime, endTime);

        List<String> names = salesTop10.stream().map(GoodsSalesDTO::getName).collect(Collectors.toList());
        String nameList = StringUtils.join(names, ",");

        List<Integer> numbers = salesTop10.stream().map(GoodsSalesDTO::getNumber).collect(Collectors.toList());
        String numberList = StringUtils.join(numbers, ",");

        return SalesTop10ReportVO
                .builder()
                .nameList(nameList)
                .numberList(numberList)
                .build();
    }

    //导出运营数据报表
    /**导出近30天的运营数据报表
     * @param response
     **/
    public void exportBusinessData(HttpServletResponse response) {
        LocalDate begin = LocalDate.now().minusDays(30);
        LocalDate end = LocalDate.now().minusDays(1);
        //查询概览运营数据，提供给Excel模板文件
        BusinessDataVO businessData = workspaceService.getBusinessData(LocalDateTime.of(begin,LocalTime.MIN), LocalDateTime.of(end, LocalTime.MAX));
        InputStream inputStream = this.getClass().getClassLoader().getResourceAsStream("template/运营数据报表模板.xlsx");
        try {
            //基于提供好的模板文件创建一个新的Excel表格对象
            XSSFWorkbook excel = new XSSFWorkbook(inputStream);
            //获得Excel文件中的一个Sheet页
            XSSFSheet sheet = excel.getSheet("Sheet1");

            sheet.getRow(1).getCell(1).setCellValue(begin + "至" + end);
            //获得第4行
            XSSFRow row = sheet.getRow(3);
            //获取单元格
            row.getCell(2).setCellValue(businessData.getTurnover());
            row.getCell(4).setCellValue(businessData.getOrderCompletionRate());
            row.getCell(6).setCellValue(businessData.getNewUsers());
            row = sheet.getRow(4);
            row.getCell(2).setCellValue(businessData.getValidOrderCount());
            row.getCell(4).setCellValue(businessData.getUnitPrice());
            for (int i = 0; i < 30; i++) {
                LocalDate date = begin.plusDays(i);
                //准备明细数据
                businessData = workspaceService.getBusinessData(LocalDateTime.of(date,LocalTime.MIN), LocalDateTime.of(date, LocalTime.MAX));
                row = sheet.getRow(7 + i);
                row.getCell(1).setCellValue(date.toString());
                row.getCell(2).setCellValue(businessData.getTurnover());
                row.getCell(3).setCellValue(businessData.getValidOrderCount());
                row.getCell(4).setCellValue(businessData.getOrderCompletionRate());
                row.getCell(5).setCellValue(businessData.getUnitPrice());
                row.getCell(6).setCellValue(businessData.getNewUsers());
            }
            //通过输出流将文件下载到客户端浏览器中
            ServletOutputStream out = response.getOutputStream();
            excel.write(out);
            //关闭资源
            out.flush();
            out.close();
            excel.close();

        }catch (IOException e){
            e.printStackTrace();
        }
    }


}
